Package Opening Device Edge Protection Molding
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Solution Overview
Problem
Existing opening devices for packages filled with pourable food products do not adequately ensure that the edge of the packaging material delimiting the pour opening is covered during molding, potentially leading to contact with the product and unwanted spillage.
Innovation Solution
An improved opening device is designed with a base frame, collar, and closing element, where the annular interface between the base frame and collar has a minimum thickness, ensuring the edge of the packaging material is covered during molding, and the closing element can be controlled to seal and open the pour opening, preventing spillage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base frame is molded onto the packaging material to cover the edge delimiting the pour opening, then the edge is protected from contacting the pourable product, but the manufacturing precision required to ensure proper coverage increases
Solution Approach 1:
The base frame is designed with a protrusion that extends beyond the collar's inner wall, creating an overlapping structure before the packaging material is inserted. This preliminary geometric configuration ensures that during molding, the base frame automatically covers the packaging edge without requiring high precision alignment, as the coverage is built into the structure itself
Solution Approach 2:
The protrusion of the base frame acts as an intermediary element between the collar and the packaging material edge. This intermediate structure ensures proper coverage of the packaging edge by the base frame during molding, facilitating the protective function while reducing the precision requirements for the molding process
Data Source
AI summary
An opening device for a package of packaging material having a pour opening comprises a base frame, a collar integrally connected to and extending from the base frame and a closing element configured to cover and/or close the pour opening. The closing element is detachably fixed to an initial contact portion of the collar. The collar comprises a sealing ring having a first inner surface facing the flow channel and an outer surface opposite the first inner surface. The base frame comprises a second inner surface facing the outer surface. The base frame comprises first and second contact surfaces for contacting the packaging material from first and second faces respectively. The initial contact portion is interposed between the first contact surface and the pouring outlet. An annular interface interposed between the base frame and the collar has a thickness larger than a distance between the first and second contact surfaces.